baber/WOPTO huggingface dataset:
Patent GB-1236424-A (GB)
Title: Photochromic projection system
IPC: G03C1/494
Filed: 1968-02-15
Abstract: 1,236,424. Photochromic materials and uses thereof. CANON K.K. 15 Feb., 1968 [20 Feb., 1967; 31 May, 1967; 19 June, 1967; 2 Aug., 1967; 16 Aug., 1967], No. 32493/70. Divided out of 1,236,421. Addition to 1,236,421. Heading C4S. [Also in Division G2] A projection system comprises a photochromic screen, a projector, and means for illuminating the whole screen with light of insufficient intensity to eliminate a colour image, formed by stimulation of light wherein the screen is a recording member as in claim 1 of the parent Specification. Photochromic material includes material coloured under U.V. or thermal radiation and also naturally coloured material losing colour under characteristic wavelength radiation. Many photochromic compounds are instanced including spirans, anils, and semicarbazones and may be dispersed, with a stabilizer, in a matrix containing a filmforming material on a base of resin, glass, metal, paper, fibre, wood, porcelain, or woven cloth. Many solvents and film forming materials (e.g. condensate type polymers, and homopolymers) are instanced and may shift the absorption spectrum wavelength as referred to in codivisional Specification 1,236,423. Positive and negative images may be obtained from positive and negative transparencies and the material provides an after image so that continuous projection is not necessary. In Fig. 1 (not shown), screen (16) comprises 1,3,3-trimethylindolino- 6<SP>1</SP>-nitrobenzopyrylspiran in toluene, and U.V. light proceeds from visible light cut out filter (12) ahead of mercury lamp (11) and adjacent negative slide (13). Visible light from lamp (11) may hasten elimination. In Fig. 2, all screen (26) is colour developed by light sources 27, with visible light cut-out filters 28 in front of or behind the screen when translucent. Visible light from tungsten lamp 21 is projected through positive slide 23, and U.V. radiation alone may erase. In Fig. 3 (not shown), 1,3,3-trimethylindolino- 8<SP>1</SP>-carboxybenzopyrylspiran and a stabilizer are dissolved in water and added to an aqueous P.V.A. solution and coated on cotton. Elimination may be by U.V. and/or intense visible radiation and the projection source may be a W or Hg lamp (31).
Patent GB-743049-A (GB)
Title: Improvements in and relating to washing machines
Inventor: JACKSON KENNETH
IPC: A47L15/06
Filed: 1953-11-23
Abstract: 743,049. Washing-machines. FISHER (OLDHAM), Ltd., H. Oct. 27, 1954 [Nov. 23, 1953], No. 32495/53. Class 138 (2). In a washing-machine comprising a pulsator 9 mounted for rotation about a substantially vertical axis at the bottom of a container 3, the pulsator is constructed as an imperforate circular member with substantially more than half of its upper working surface raised above the plane of its rim and divided by a transverse ridge into two portions 9a, 9b, preferably of unequal areas, so that the leading portion 9a increases progressively in height up to the ridge, while the trailing portion 9b progressively decreases in height, the remaining or third portion 9c of the working face being a flatbottomed depression or hollow below the plane of the rim, all the portions 9a, 9b and 9c merging smoothly without sharp abutments. The container 3 is preferably shaped as shown in plan in Fig. 9 with opposed walls 3a arranged at 135 degrees to each of the adjacent walls. The pulsator is arranged in a sump 6 which may be central as shown or off-centre, and has an electric heating element mounted below the pulsator. The rim of the pulsator is in line with the top of the sump. The pulsator is connected through a clutch and belt drive with a motor which also drives a vertical take-off shaft 18 which may be used for driving a wringer or ironer. Specification 710,822 is referred to.
Patent GB-817298-A (GB)
Title: Water repellent compositions for textiles
Inventor: WILLIAMS LESLIE
IPC: D06M13/02
Filed: 1956-10-25
Abstract: 817,298. Waterproofing compositions. SPENCE & SONS Ltd., P. Oct. 18, 1957 [Oct. 25, 1956], No. 32497/56. Class 140. Water-repellent compositions for treating textile materials such as wool or rayon gabardine, comprise a hydrocarbon wax, e.g. paraffin wax and either the titanium ortho-ester of commercial iso-octanol or reactants from which such ester is derived. The main constituents of commercial iso-octanol are dimethyl hexanols, methyl heptanols and small quantities of substituted pentanols and isomeric nonanols. The composition may contain free iso-octanol as well as the ester. The reactants from which the ester is derived may consist of 1 mol. of a lower (e.g. butyl) titanate and 8 or more mols. of isooctanol. A mixture of paraffin wax and petroleum jelly may be used. The compositions are applied dissolved in the conventional dry-cleaning solvents, e.g. perchlor-ethylene or petroleum distillates.
Patent GB-1148059-A (GB)
Title: Improvements in or relating to automatic exposure control apparatus for cameras
IPC: G03B7/083
Filed: 1966-07-20
Abstract: 1,148,059. Photo-electric exposure control. HONEYWELL Inc. July 20, 1966 [July 21, 1965 (2)], No. 32655/66. Heading G1A. [Also in Division G2] An automatic exposure control apparatus for a camera has one or more photo-cells 27 which produce a response dependent on the intensity of light incident thereon and a control circuit which receives a stored response when the light is interrupted to control the exposure of a film in the camera in accordance with the stored response. As applied to a single lens reflex camera, light is received by the photo-cell through objective 1 provided with a diaphragm 2, Fresnel lens 7 ground glass screen 8, mask 9 and pentaprism 10. A mirror 3 is tiltable upwards to permit exposure of a film 6 through a focal plane shutter 4. The shutter has blinds 17 and 20 controlled by a release button 14. A circuit 28A, Fig. 4, includes a battery 32 a switch 34 mechanically connected to the shutter release, transistors 35, 36, and 37, a capacitor 38 and a solenoid 29 which upon de-energization closes the blind 20 of the shutter. Switch 34 is in closed position before shutter release to connect capacitor 38 across a resistor 40. A voltage, in accordance with the resistance of photo-cell 27 and the light incident thereon, is fed to capacitor 38. Upon depression of the shutter release the mirror 3, Fig. 1 is moved upwardly such that photo-cell 27 no longer receives light. Switch 34 Fig. 4 is opened to disconnect the now charged capacitor 38 from photo-cell 27. Capacitor 38 discharges during exposure, such that when the capacitor voltage drops to the trigger level of transistors 36 and 37 solenoid 29 is de-energized to terminate the exposure. Thus, the exposure time is proportional to the charging voltage of the capacitor at the instant the switch is opened and inversely proportional to the intensity of light incident on the photo-cell. Film sensitivity is accounted for by a manually adjusted resistance 39 or the capacitance of capacitor 38 may be varied. In another embodiment, a transfluxor (44, Fig. 5 not shown) stores the response in place of capacitor 38 Fig. 4. In other embodiments the capacitor voltage is fed to a Schmidt trigger Fig.6 (not shown) which controls the energization of solenoid (29) which then closes the shutter or is fed to an amplifier (60 Fig. 7 not shown) and trigger circuit which energize and then de-energize solenoid (29). A test lamp (66) if let indicates there is sufficient light for exposure upon closure of a test button (63) which then supplies a voltage sufficient to operate trigger circuit (61) should the light falling on photo-cell (27) be sufficient. In another embodiment Fig.8 (not shown) photocell (27) is a cadmium sulphide cell the resistance of which exhibits a slow decay at low light intensities produces and stores the response. A linkage (76) partly closes diaphragm (2), upon opening the shutter and through a resistance (72) and contact (75) varies the trigger voltage to compensate for the reduction in light intensity.
Patent GB-479481-A (GB)
Title: Improvements in and relating to electric signalling cables with electro-static screens
IPC: H01B11/10
Filed: 1936-11-28
Abstract: 479,481. Compound sheet materials. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. Nov. 28, 1936, No. 32678. Convention date, Dec. 3, 1935. Drawings to Specification. [Class 140] [Also in Group XXXVI] An electrostatic screen for cables consists of a metallized supporting body of polyvinyl chloride, after chlorinated polyvinyl chloride, or mixed polymerizates of vinyl chloride and acrylic acid ester on which the metal is provided. The metal layer may be sprayed, stuck or otherwise deposited on one or both sides of the supporting body and may be covered with a further layer of polyvinyl chloride &c.
Patent GB-1152727-A (GB)
Title: The Halogenation of Vinyl Chloride Polymers and/or Copolymers
IPC: C08F8/20
Filed: 1966-07-20
Abstract: 1,152,727. Chlorination of polyvinyl chloride. SOCIETA EDISON. 20 July, 1966 [21 July, 1965; 22 March, 1966], No. 32683/66. Heading C3P. The suspension chlorination of vinyl chloride polymers and copolymers is effected in a chlorofluoroalkane as a suspending medium. There may also be present an aqueous phase, consisting of hydrochloric or trichloroacetic acid, or a chloroalkane. The chlorofluoroalkane may be further chlorinated in the process; specified media are CHCl 2 F, CClF 2 CCl 2 F, CCl 3 F and CF 3 CH 2 Cl and suitable chloroalkanes are CHCl 3,  CCl 4  and CH 2 ClCH 2 Cl. Chlorination may be promoted by radiation or a free radical catalyst. The polymer may contain as comonomers vinyl acetate, vinylidene chloride, acrylic, methacrylic or fumaric esters or may be a polyblend or a vinyl chloride graft polymer or copolymer.
Patent GB-724068-A (GB)
Title: Improvements in or relating to electricity supply equipment for electrical precipitation plant
Inventor: FRANCOMBE KENNETH WALTER
IPC: B03C3/68
Filed: 1952-12-24
Abstract: 724,068. Supply systems for electrostatic precipitators. WHESSOE, Ltd. March 24, 1952 [Dec. 24, 1952], No. 32729/52. Drawings to Specification. Class 38 (4). In a supply system for an electrostatic gas cleaning precipitator operating under conditions of variable rate of flow of gas, such as occur in precipitators associated with water-gas production plant, automatically operating means are provided for varying the high-tension voltage applied to the precipitator in correspondence with variation in the rate of flow of gas treated, so that the discharge current is maintained substantially proportional to the rate of gas flow. The voltage-varying means, which may be a continuously rotatable induction regulator or a reciprocable moving-coil regulator for controlling the input voltage to the high-tension transformer feeding the precipitator, may be operated by, or in synchronism with, a camshaft or other rotary-control member governing a cyclic process by which the gas is generated. Where the plant comprises a plurality of generators working in staggered relation, the drive to the voltage regulator may include a change-speed gear to adapt its working to the number of generators in use. Further voltage variation may be provided by a manually-adjustable autotransformer in the main power-supply circuit. A switching system permits the automatic voltage regulator to be cut out of circuit and the auto-transformer to feed direct into the high-tension transformer.
Patent GB-1190794-A (GB)
Title: Improvements relating to Falling Film Heat Exchangers
Inventor: ROSENBLAD CURT F
IPC: F28D3/04
Filed: 1967-07-17
Abstract: 1,190,794. Evaporators, film type. C. F. ROSENBLAD. 17 July, 1967 [13 Sept., 1966], No. 32751/67. Heading B1B. [Also in Division F4]  An evaporator 10 comprises a first set of sheet metal baffles 47 of inverted V cross-section which deflect liquid, e.g. pulp-cooking liquor to be heated and/or evaporated, from nozzles 41, 42 onto a second set of baffles formed by the welded seam portions 46 of plates 16 from which it flows in a film down channels 19, the other channels 17 formed by the plates 16 being supplied with a heating fluid. Each baffle 47 is held in triangular holes of T-shaped members 52 which rest on adjacent seams 46. Successive members 52 in each row thereof are staggered. The plates 16 are separated by spacers 18 and held in a casing including plates 11, 12, which are bolted together. The concentrated liquid 26 is collected in a chamber 25 whilst vapour separated by a baffle 27 is discharged through a pipe 29. Some liquid 26 and fresh dilute liquid are recirculated through the evaporator.
Patent GB-255410-A (GB)
Title: Improvements in means for holding in adjusted positions articles slidable in holders, such for instance as sticks of shaving soap, sticks of cosmetic and the like
IPC: A45D40/00
Filed: 1925-12-29
Abstract: 255,410. Lowenfeld, H. July 20, 1925, [Convention date]. Fittings, internal; contents, delivering. - In a case for a stick of shaving soap &c. having means for gripping the stick in any adjusted axial position, the gripping member is fixed to the holder and is moved towards and away from the soap about an axis or virtual axis which is substantially parallel to the length of the case. As shown in Figs. 1 and 2, the body b of the case is formed with a circular or part-circular channel c having a pin e on which a sickle-shaped member d is pivoted; the other end f of the member d projects through a slot g in the case so that the member mav be moved into the channel to allow the stick a to be moved, or the member may be moved out of the channel about the pin or axis e to engage the stick by its concave edge, which may be provided with teeth. A second sickle-shaped member may be pivoted in the channel and connected, to the first by a pin and slot, and one or both of these members may have teeth on their concave edges. In a modification the two sickle-shaped members may be replaced by a resilient band attached at one end to the body of the case and having its operating end passing through a slot in the case. In a further form, elastic blades carrying teeth are fixed in the channel c and a ring rotatably mounted on the outside of the case has angular members which pass through slots in the channel and engage the blades so that by rotating the ring the teeth on the blades may be forced into the shaving stick etc.; the positions of the blades and angular members may be reversed and the ring may be rotated by turning the cover of the case. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a form in which the soap stick is provided with a screw-thread engaging an internal thread on the case. This subject-matter does not appear in the Specification as accepted.
Patent GB-856671-A (GB)
Title: Improvements in or relating to cameras, particularly television cameras
Inventor: GERMANY LESLIE WALTER
IPC: H04N5/225
Filed: 1958-10-21
Abstract: 856,671. Lens turrets; iris diaphragm controls. PYE Ltd. Oct. 21, 1958 [Oct. 21, 1957], No. 32797/57. Class 97(1) A camera has a lens turret carrying several lenses which may be selectively moved into operative position, each lens being composed of a set of optical elements which in conjunction with another set of optical elementsforms a lens system for producing an image of an object in a desired plane in the camera, and an iris diaphragm mounted on the optical axis of the camera between the lens turret and the other set or sets of optical elements which are employed to form the lens systems. As shown in Fig. 1, a turret 3 carries lenses 4 which when each is moved into the operative position, in front of the pick-up tube 2, combines with a set of optical elements 5 to define the operative lens system. Between the sets 4, 5 forming the lens system is arranged an iris diaphragm 6 actuated by motor 7. Alternatively, the fixed set may be mounted on the front of the camera, and the lens turret arranged so that the selected set of lenses carried thereby will be disposed behind the front set. In a modification, the iris diaphragm may be combined with an additional optical element to form a common central component for all the lens systems. The turret may also carry both the front and the rear sets of optical elements.
Patent GB-293784-A (GB)
Title: Improvements in or relating to connecting means for piping or the like
IPC: F16L33/14
Filed: 1927-12-05
Abstract: 293,784. Tute, K. July 12, 1927, [Convention date]. Clips, band for coupling hose pipes, comprise a saddle-piece having a base-plate with spaced bars b, c and upstanding lugs a in which a slotted tightening member e is rotatably mounted, the inner edge of the bar b being vertically below one side of member e. One end of a flexible band f is bent round the bar c of the base-plate and the band is then wrapped round the hose pipe d, passing up between the bars b, o and over bar c as shown. The free end of the band is finally brought up and inserted in member e, which is then rotated to tighten the band, the parts being so arranged that the band f is bent over limb b at approximately a right-angle as shown, this bend serving to retain the clip in tightened position. The member e may be formed by bending rod of semi-circular cross-section, the bend forming an eye h, Fig. 3, to receive a tool &c. for rotating member e.
Patent GB-1219669-A (GB)
Title: Improvements relating to azo pigments and their use
IPC: C09B43/38
Filed: 1968-07-10
Abstract: 1,219,669. Artificial resin lacquer; colouring PVC. J. R. GEIGY A.G. 10 July, 1968 [11 July, 1967], No. 32820/68. Headings C3P and C3R. [Also in Divisions B2 and C4] In Examples 40, 41 and 44, the pigment is used to colour polymer compositions contain - ing (a) PVC, dioctylphthalate, dibutyl tin dilaurate, Na-Ba salt of an acid phosphoric acid alkyl ester and titanium dioxide, (b) PVC, a Ba-Cd stabilizer, a co-stabilizer with organic phosphite base, epoxydized soya oil and titanium dioxide, and (c) PVC, dioctyl phthalate, dibutyl tin dilaurate, Na-Ba salt of an acid phosphoric acid alkyl ester, chalk, and an aliphatic hydrocarbon mixture having b.p. range 13-200 degrees and an evaporation number of 81. In Example 42, a stoving lacquer contains 20 g. titanium dioxide, 40 g. of a 60% solution of a coconut alkyd resin in xylene, 24 g. 50% solution of melamine resin in butanol, 8 g. xylene, 7 g. ethylene glycol monomethyl ether and 1 g. of the pigment of the above formula.
Patent GB-1436176-A (GB)
Title: Mono-azo compounds useful as disperse dyestuffs
IPC: C09B29/42
Filed: 1973-07-10
Abstract: 1436176 Disperse monoazo dyes SANDOZ Ltd 10 July 1973 [11 July 1972] 32837/73 Heading C4P New disperse monoazo dyes free from watersolubilizing groups of formula wherein R 1  is H or NO 2  and (1) R 2  is H, Cl, Br, NO 2 , alkylcarbonyl, alkylcarbonyloxy, alkoxycarbonyl, phenyl or benzoyl optionally substituted by 1-3 Cl, Br, CN or NO 2  substituents, wherein alkyl or alkoxy are C 1-4  groups and R 3  is Cl, Br, CN, NO 2 , alkoxycarbonyl, alkylcarbonyloxy, benzoyloxy or phenoxycarbonyl optionally substituted by 1-3 Cl, Br, CN or NO 2  substituents, wherein alkyl or alkoxy are C 1-4  groups or (2) R 2  and R 3  together signify -CH=CH-CH=CH- optionally substituted by 1-3 Cl, Br, CN or NO 2  substituents, K is (a) a 1-(#-alkoxycarbonylalkylamino)-naphth-4-yl, 1 - (# - acetoxyalkylamino) - naphth - 4 - yl, 2 - # - alkoxycarbonylalkylamino - methoxyphenyl - 5 or 3 - # - alkoxycarbonylalkylamino-chlorophenyl-6 radical, wherein alkyl and alkoxy are C 1-4  groups or (b) a radical of formula in which each of R 4  and R , which may be the same or different, signifies a hydrogen atom, an unsubstituted alkyl radical or an alkyl radical substituted by up to two substituents selected from chlorine and bromine atoms, cyano, nitro, hydroxy, alkoxy, phenoxy, alkanoyl alkanoyloxy, chloroalkanoyloxy, benzoyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylaminocarbonyl, dialkylaminocarbonyl alkylaminocarbonyloxy, dialkylaminocarbonyloxy, phenylaminocarbonyloxy, pyridyl and radicals which alkyl radicals, alkoxy substituents and alkyl and alkoxy moieties in such substituents contain 1 to 4 carbon atoms, which alkanoyl substituents and alkanoyl moieties in such substituents contain 1 to 5 carbon atoms, with the proviso that when one of R 4  and R 5  signifies a hydrogen atom, the other has a significance other than hydrogen, R 6  signifies a hydrogen, chlorine or bromine atom, a cyano, alkyl, formylamino, alkylsulphonylamino, benzoylamino, alkylcarbonylamino, alkoxycarbonylamino alkoxy, cyano, chloro- or bromoalkylcarbonylamino or alkoxyalkoxycarbonylamino radical, which alkyl radicals and alkyl and alkoxy moieties in such radicals contain 1 to 4 carbon atoms, R 7  signifies a hydrogen atom or an alkoxy radical of 1 to 4 carbon atoms, R 8  signifies a hydrogen atom, an alkylamino, dialkylamino or phenylamino radical, an unsubstituted alkyl radical or an alkyl radical substituted by a hydroxy, cyano, alkoxy, alkanoyloxy or phenyl radical which alkyl radicals and moieties and alkoxy substituents in such radicals contain 1 to 4 carbon atoms and which alkanoyl moieties in such substituents contain 1 to 5 carbon atoms, R 9  signifies a cyano group or an alkylsulphonyl radical, containing 1 to 4 carbon atoms, and R 10  signifies an alkyl radical of 1 to 4 carbon atoms or a phenyl radical, are prepared by azo coupling. The dyes are used to colour polyester, cellulose acetate and synthetic polyamide fibres in yellow, red and blue shades.
Patent GB-766608-A (GB)
Title: Screw press for mixing and extruding thermoplastic material
IPC: B29C48/41
Filed: 1954-11-12
Abstract: 766,608. Continuous-discharge mixing- machines. S. A. S. LAVORAZIONE MATERIE PLASTICHE (L.M.P.) DI M. I. COLOMBO & C. Nov. 12, 1954 [Nov. 13, 1953], No. 32904/54. Class 86 A machine for mixing and extruding thermoplastic materials comprises a casing 1, Fig. 1, within which is located a multiple-thread central screw 2 meshing with a pair of auxiliary screws 3, 4 having a smaller number of threads than the screw 2 and terminating in a delivery chamber 6. In the construction shown the central screw 2 has two threads S<SP>3</SP>, S<SP>4</SP> engaging respectively, single threads, F<SP>3</SP>, F<SP>4</SP> on the auxiliary screws 3, 4. In one modification the central screw has n threads, six say, and there are m (three) auxiliary screws each with p threads (two), such that m x p = n, and in another modification the central screw has, say, four threads and there are four auxiliary screws all with three threads, each of the latter threads meshing with a thread of the central screw. The screws may decrease in pitch from their feed to extrusion ends, or may be formed by successive sections decreasing in pitch with or without smooth portions between said sections; further alternative constructions of screws are also described. Fig. 9 shows a machine in which the central screw 2 is provided with a screw-threaded extension 11 rotatable in an extension 12 of the casing 1, the extension having a length which may vary from one to two times the length of the screws 3, 4 which mesh with the central screw and the said screws being formed of two sections of different pitch. The casing 1 is heated in known manner, and, where necessary, the central screw, and also the auxiliary screws, may be heated by internal electric heaters or the circulation of a heated fluid. Specification 629,109 [Group V] is referred to.
Patent GB-494800-A (GB)
Title: Air feed for diving suits
IPC: B63C11/02
Filed: 1937-11-29
Abstract: 494,800. Diving. TOPPER, E., and MARTIN, W. H. Nov. 29, 1937, No. 32980. Convention date, Nov. 28, 1936. [Class 68 (ii)] The flange 2 by which a diver's helmet 1 is attached to the shoulder piece 3 is hollow and opens into the interior of the helmet, the air line 11 being connected to the flange directly or through a second hollow flange 4 or the shoulder piece and hollow connecting bolts 15. A packing ring 18 and the flexible flange 17 of the diving suit may be clamped between the hollow flanges.